Hydromagnesite-magnesium hydroxide compositions which, when used as fillers in smoking article wrappers, significantly reduce the amount of sidestream smoke produced by the burning smoking article while providing the smoking article with good subjective characteristics.

Hydromagnesite-magnesium hydroxide compositions are prepared which, when used as fillers in smoking article wrappers, significantly reduce the amount of sidestream smoke produced by the burning smoking article while providing the smoking article with good subjective characteristics.

A main aspect of this invention is the provision of a liquid medium for scrubbing contaminants from an environmental gas-phase. Toxic chemicals such as phosphine and arsine are removed from a gas-phase stream by contacting the gas-phase stream with an aqueous medium which oxidizes the

The invention relates to the use of co-crystalline magnesite/magnesium hydroxide compositions as fillers for smoking article wrappers. Smoking articles made with wrappers containing these compositions exhibit significantly reduced sidestream smoke and does not compromise subjective a

This invention provides a process for the production of novel smoking compositions which contain a benzofuranone flavorant additive, and further provides novel benzofuranone compounds as illustrated by the cis 6-phenyl-3a, 4,5,7a-tetrahydro-2(3H)-benzofuranone: ##STR1## Under nor

An improved smoking article wrapper which significantly reduces sidestream smike using magnesium carbonate in the form of magnesite as a filler. Smoking articles which employ the wrappers exhibit a significant reduction in sidestream smoke without adverse effect on subjective characteris

This invention provides novel heterocyclic ester compounds. This invention further provides smoking compositions which contain an invention heterocyclic ester as a flavorant-release additive, as illustrated by the following structure: ##STR1## Under normal cigarette smoking condi

A smoking tobacco composition having incorporated therein a dioxane compound as a flavorant-release additive which under normal smoking conditions imparts improved flavor to mainstream smoke and improved aroma to side-stream smoke.

This invention provides smoking compositions which contain a tetracarbonate ester compound as a flavorant additive.In one of its embodiments, this invention provides tobacco compositions which contain a tetracarbonate ester flavorant additive such as 2,5-bis(menthoxycarbonyloxymethylene)

This invention provides smoking compositions which contain a dioxane diester compound as a flavorant additive.In one of its embodiments, this invention provides tobacco compositions which contain a dioxane diester flavorant additive such as 2,5-bis(3-methylvaleryloxy)-1,4-dioxane: ##

This invention provides smoking compositions which contain a dicarbonate ester compound as a flavorant additive.In one of its embodiments, this invention provides tobacco compositions which contain a dicarbonate ester flavorant additive such as 2,5-bis(2-methoxyphenoxycarbonyloxy)-1,4-di

This invention provides smoking compositions which contain a monocarbonate ester compound as a flavorant additive.In one of its embodiments, this invention provides tobacco compositions which contain a monocarbonate ester flavorant additive such as 1-phenoxycarbonyloxy-3-propanol. ##